Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Cash flows from operating activities
Net loss	$ (10,407)	$ (164)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	25,545	20,461
Provision for doubtful accounts and sales returns	1,875	2,141
Stock-based compensation expense	27,860	30,005
Deferred taxes	(7,431)	(1,142)
Amortization of deferred financing costs and discount	645	506
Other non-cash adjustments	(150)	(32)
Changes in operating assets and liabilities, net of acquisition and disposal of businesses:
Accounts receivable	9,010	10,407
Prepaid expenses and other assets	(2,067)	(17,426)
Trade accounts payable	15,919	7,550
Accrued expenses and other liabilities	(13,430)	549
Deferred revenue	(22,865)	(22,752)
Net cash provided by operating activities	24,504	30,103
Cash flows from investing activities
Purchase of property and equipment	(4,266)	(3,470)
Capitalized software development costs	(12,683)	(9,302)
Purchase of net assets of acquired companies, net of cash and restricted cash acquired	(19,985)	0
Net cash used in investing activities	(36,934)	(12,772)
Cash flows from financing activities
Proceeds from issuance of debt	59,400	80,700
Payments on debt	(33,765)	(59,667)
Employee taxes paid for withheld shares upon equity award settlement	(34,674)	(18,426)
Change in due to customers	(315,294)	(353,597)
Change in customer funds receivable	(1,115)	(563)
Purchase of treasury stock	0	(28,066)
Net cash used in financing activities	(325,448)	(379,619)
Effect of exchange rate on cash, cash equivalents and restricted cash	(504)	230
Net decrease in cash, cash equivalents and restricted cash	(338,382)	(362,058)
Cash, cash equivalents and restricted cash, beginning of period	651,762	644,969
Cash, cash equivalents and restricted cash, end of period	313,380	$ 282,911
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents [Abstract]
Cash and cash equivalents	33,786
Total restricted cash	279,594
Total cash, cash equivalents and restricted cash in the statement of cash flows	$ 313,380